Saw-swage



UNITED STATES PATENT OFFICE.

JOHN MATHER, OF LEOMINSTER, MASSAOHUSETTS.`

SAW-SWAGE.

SPECIFICATION forming part of Letters Patent No. 277,589, dated May 15,1883. Application filed January 15, 1883. (No model.)

To all whom it may concern:

Be it known that I, JOHN MATHER, of Leominister, in the county ofWorcester and Gommonwealth of Massachusetts, have invented certain newand useful Improvements in Saw- Swages; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming a part ot' thisspecication, in which- Figure l represents a side view of my improvedsaw-swage as it appears when applied to the point ot' a saw-tooth, thelatter being shown broken oft' toward its base. Fig. 2'represents a sideview of the parts shown in Fig. l when turned a quarter-way around. Fig.3 represents a section on line AB, Fig. 1,1ooking in the direction ofarrow 1. Fig. et represents a section on line O D, Fig. 2, looking inthe direction ot' arrow 2, Fig. 2. Fig. 5 represents a front View of thedevice when not in use, looking in the direction of arrow 3, Fig. 1.Fig. 6 represents a cross-section on line E F, Fig. l, looking in thedirection of arrow 3, same figure. Fig. 7 represents a back edge view ofthe tooth before it has been swaged, and Fig. 8 represents a back edgeot the tooth after it has been swaged.

To enable those skilled in the art to which my invention belongs to makeand use the same, I will proceed to describe the same more in detail.

The nature ot' my invention consists in certain special improvements insaW-svrages, as will be more fully set `forth hereinafter.

In the drawings, the part marked G represents the handle part oftheswage, H the screw-threaded shoulder, andI the slotted tapering head.The holding-band J is made with a screw-thread, o, to iit thescrew-thread 11 on the shoulder H, While the tapering hole C in itsupper end tits against the taperingsurface of the head I and thetapering outer surface oi' the swaging-dies K K, two being usedone oneach side-all as fully indicated in the drawings.

It will be observed that the slots for the dies are so made that theyapproach each other as they extend toward end L of the device, and whenholding-band J is screwed into position, as shown in the drawings, thedies are securely locked and held in position, whereby, when the deviceis placed in position upon the tooth M of a saw, as indicated in Figs.1, 2, and 3, (only a section ot' the tooth being shown,) a blow can bestruck upon the end of the device without danger of either breaking anyparts of the device or of displacing any ot' them. Consequently quickandhard blows can be given with safety, thereby insnrin g good and perfectwork.

The dies K K are made with inclined faces e, as fully indicated inFigs.'2 and 3, whereby the point of the saw-tooth is guided quickly intoposition as soon as the device is placed upon the tooth, ready forV theupsetting or swaging blow.

To enable the operator to readily .attach the holding-band J, I preferto make two of' the sides ot' its base J flat, and also two of the sidesof the part H tlat, whereby said parts can be screwed together andunscrewed very quickly.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, 1s-

I. In a saw-swage, the stock G, having the round screw-threaded shoulderH and slotted tapering head Ljointly with the holding-band JOHN MATHER.

Witnesses THos. H. DODGE, v ALBERT A. BARKER.

